Subtitles translate spoken dialogue into another language and assume the viewer cannot understand the audio. Captions do the same job for viewers who cannot hear the audio at all, so they also describe important sounds and identify speakers. The two look alike on screen, but they answer different questions.
That single distinction decides which file you need. If your audience shares your language and can hear, subtitles are for crossing a language gap. If your audience includes deaf or hard of hearing viewers, you need captions that carry sound information too.
Captions answer what would I miss with no sound. Subtitles answer what would I miss without this language.
Ship captions for your primary audience because they serve the widest range of viewers. Then add subtitle tracks for each language you want to reach, using your corrected caption file as the base. Cleaning the text once saves you from fixing the same mistakes in every translation.
Auto generated captions from a platform are a starting point, not a finished track. They ignore sound cues, guess at names, and rarely handle more than one speaker well. Review and edit them before you call the job done.
Set one style for both formats so viewers recognize your text across languages. Pick a font and a size that stay the same whether the track is in your language or another.
Store the base caption file with each project. When you translate later, you start from a clean source rather than a fresh machine guess, and the quality carries through every version.
Captions help deaf viewers, but they also rescue anyone on a silent phone or in a loud room. Here is why adding them grows your entire audience.
Accurate captions take more than a machine pass. Learn to fix names and timing so your text reads like a person wrote it, not like a machine guess.
On screen text fails when it is small, low contrast, or on screen too briefly. Fix size, weight, and timing so every viewer can read it at a glance.
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